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Finding the Fourth Proportional to 8,068.80, 12,107.79 and 3,137.79

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Solution

The fourth proportional to 8,068.80, 12,107.79 and 3,137.79 is: 4,708.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,068.80 : 12,107.79 = 3,137.79 : x
  2. Step 2: Convert to fraction form
    8,068.80/12,107.79 = 3,137.79/x
  3. Step 3: Cross multiply
    8,068.80x = 12,107.79 × 3,137.79
  4. Step 4: Simplify right side
    8,068.80x = 37,991,702.38
  5. Step 5: Solve for x
    x = 37,991,702.38/8,068.80
  6. Step 6: Final answer
    x = 4,708.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.